Can Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT be tightened under residual pressure up to 350 bar without risk of leakage or unscrewing?

Yes. Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT can be tightened under residual pressure up to 350 bar without risk of leakage or unscrewing. The product description explicitly permits tightening of quick couplings under residual pressure up to 350 bar, features a leak-free flat-face connection and an additional O-ring on the socket body to prevent unscrewing from vibrations. Materials, sealing (NBR) and coatings support high-pressure, corrosion-resistant service; working pressure ratings go up to 550 bar depending on size. Ensure the correct HFT size and proper installation to meet the stated limits.

Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT

Q: Is the Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT suitable for high-pressure pulse applications?

Yes. The Screwed quick-connector with GW BSP, zinc-nickel coated carbon steel plug, HOLMBURY type HFT is suitable for high-pressure pulse applications. The series HFT is explicitly described as "used in applications with high pressure spikes" and offers a working pressure up to 550 bar (depending on size). It features a leak-free flat-face design, NBR sealing, and an additional O-ring on the socket body to prevent unscrewing from vibrationsâimportant for pulse and shock environments. Tightening under residual pressure up to 350 bar is permitted. The zinc-nickel coating and carbon steel construction provide enhanced corrosion resistance and mechanical durability, and the product complies with API 16D (BOP) standards, further supporting use in demanding high-pressure conditions. Operating temperature range is â40Â°C to +106Â°C; ensure this and the specific coupling size meet your application's pressure, pulse frequency, and fluid/temperature requirements.

All products, Hydraulic quick couplings/

Additional information

Material	CS – steel (cast iron)

Quick coupling plug, series HFT, with internal BSP thread. Leak-free flat-face connection type. Used in applications with high pressure spikes. Features an additional O-ring on the socket body to prevent unscrewing due to vibrations. Tightening of quick couplings under residual pressure up to 350 bar is permitted. Quick couplings have a zinc-nickel coating, providing several times greater corrosion resistance than zinc coating. Compliant with API 16D standard (for BOP applications). Material: carbon steel with zinc-nickel coating. Sealing: NBR. Operating temperature: from -40°C to +106°C. Working pressure: up to 550 bar (depending on the size of the quick coupling). Flow is specified for a pressure drop of 3 bar.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HQ-HFT10-M-06G	Screw connector FF HFT DN10 with G 3/8", nitrile seal	-	550	In stock	Enquiry
HQ-HFT10-M-08G	Screw connector FF HFT DN10 with G 1/2", nitrile seal	-	550	In stock	Enquiry
HQ-HFT12-M-08G	Screw connector FF HFT DN12 with G 1/2", nitrile seal	-	550	In stock	Enquiry
HQ-HFT12-M-12G	Screw connector FF HFT DN12 with G 3/4", nitrile seal	-	550	In stock	Enquiry
HQ-HFT16-M-12G	Screw connector FF HFT DN16 with G 3/4", nitrile seal	-	550	In stock	Enquiry
HQ-HFT19-M-16G	Screw connector FF HFT DN19 with G1" thread, nitrile seal	-	500	In stock	Enquiry
HQ-HFT25-M-20G	Screw connector FF HFT DN25 with G1.1/4", nitrile seal	-	470	In stock	Enquiry
HQ-HFT32-M-24G	Screw connector FF HFT DN32 with G1.1/2", nitrile seal	-	400	In stock	Enquiry

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Quick coupling plug, series HFT, with internal BSP thread. Leak-free flat-face connection type. Used in applications with high pressure spikes. Features an additional O-ring on the socket body to prevent unscrewing due to vibrations. Tightening of quick couplings under residual pressure up to 350 bar is permitted. Quick couplings have a zinc-nickel coating, providing several times greater corrosion resistance than zinc coating. Compliant with API 16D standard (for BOP applications). Material: carbon steel with zinc-nickel coating. Sealing: NBR. Operating temperature: from -40°C to +106°C. Working pressure: up to 550 bar (depending on the size of the quick coupling). Flow is specified for a pressure drop of 3 bar.